Exploring planetary magnetic environments using magnetically unclean spacecraft: a systems approach to VEX MAG data analysis
Exploring planetary magnetic environments using magnetically unclean spacecraft: a systems approach to VEX MAG data analysis
复制标题
DOI：
10.5194/angeo-29-639-2011
复制
发表时间：
2011-01-01
影响因子：
1.9
通讯作者：
Dimmock, A. P.
中科院分区：
文献类型：
--
作者：
Pope, S. A.;Zhang, T. L.;Dimmock, A. P.
磁场的原位测量对于研究行星研究中的许多基本问题是至关重要的。因此，磁力计实验是金星快车有效载荷的关键因素。除了太阳风与金星的相互作用外，这些测量对于研究大气逃逸和探测闪电至关重要。然而，磁场测量的方法必须与传统方法不同，因为金星快车不是一个磁性清洁的航天器。采用基于两点同步测量磁场和系统识别软件的技术将自然磁场与航天器产生的干扰分离开来。本文概述了分离这两种磁场类型的技术以及对1 Hz Venus Express数据所取得的结果。先前的出版物表明，金星快车所得到的清洁数据与机载磁清洁航天器的测量数据质量相当（Zhang et al., 2008a, b; Slavin et al., 2009）。
In situ measurements of the magnetic field are vital to the study of many fundamental problems in planetary research. Therefore the magnetometer experiment is a key element of the payload of Venus Express. In addition to the interaction of the solar wind with Venus, these measurements are crucial for the study of atmospheric escape and detection of lightning. However, the methodology for the magnetic field measurements had to be different to the traditional approach, because Venus Express is not a magnetically clean spacecraft. A technique based on two-point simultaneous measurements of the magnetic field and systems identification software is used to separate the natural magnetic field from the spacecraft generated interference. In this paper an overview of the techniques developed to separate these two field types and the results achieved for 1 Hz Venus Express data are presented. Previous publications suggest that the resulting Venus Express cleaned data is of comparable quality to measurements made from onboard magnetically clean spacecraft (Zhang et al., 2008a, b; Slavin et al., 2009).